Where Facebook previously required a phone number in order to activate two-factor authentication, it will now also accept apps like Duo Security and Google Authenticator. The company also says the setup process has been refined, resulting in a more simple, guided experience when enabling 2FA.

This update comes a couple months after Facebook admitted a bug in its 2FA system caused non-security-related SMS notifications to be sent to users’ phones. Facebook uses the automated number 362-65 as its two-factor authentication number, and that same number…